code: def export_equal_string_broadcast() -> None:
      node = onnx.helper.make_node(
          "Equal",
          inputs=["x", "y"],
          outputs=["z"],
      )
      x = np.array(["string1", "string2"], dtype=np.dtype(object))
      y = np.array(["string1"], dtype=np.dtype(object))
      z = np.equal(x, y)
      expect(
          node,
          inputs=[x, y],
          outputs=[z],
          name="test_equal_string_broadcast",
      )
  
file_path: onnx/onnx/backend/test/case/node/equal.py
imports: import numpy
  import onnx
  from onnx.backend.test.case.base import Base
  from onnx.backend.test.case.node import expect
label_desc: Use image node_id 4 for calling the Equal obj's underlying member method code with example usage: obj.export_equal_string_broadcast() without return types